Intracellular Staining by Flow Cytometry
|Detection of TIMP‑3 in MDA‑MB‑231 Human Cell Line by Flow Cytometry. MDA‑MB‑231 human breast cancer cell line was stained with Mouse Anti-Human TIMP‑3 APC‑conjugated Monoclonal Antibody (Catalog # IC9731A, filled histogram) or isotype control antibody (Catalog # IC003A, open histogram). View our protocol for Staining Intracellular Molecules.|
Tissue inhibitors of metalloproteinases (TIMPs) are a family of proteins that regulate the activation and proteolytic activity of the zinc enzymes known as matrix metalloproteinases (MMPs). There are four members of the family, TIMP-1, TIMP-2, TIMP-3 and TIMP-4. TIMP-3 is a glycoprotein with a molecular mass of 30 kDa produced by a wide range of cell types. TIMP-3 inhibits active MMP-mediated proteolysis by forming a non-covalent binary complex with the MMP active site through its N-terminal domain. In addition, TIMP-3 is the only known member of the TIMP family that is an effective inhibitor of ADAMs such as TACE.
TIMP-3 is unique among the TIMPs because of its high affinity for binding to the extracellular matrix. Point mutations in the TIMP-3 C-terminal domain have been reported to result in Sorsby's fundus dystrophy, a disease leading to macular degeneration and loss of vision.
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